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Android GridView實(shí)現(xiàn)橫向列表水平滾動

更新時(shí)間：2018年07月17日 15:14:23 作者：sinat_21376777

這篇文章主要為大家詳細(xì)介紹了Android GridView實(shí)現(xiàn)橫向列表水平滾動，具有一定的參考價(jià)值，感興趣的小伙伴們可以參考一下

本文實(shí)例為大家分享了Android GridView實(shí)現(xiàn)橫向列表水平滾動的具體代碼，供大家參考，具體內(nèi)容如下

有時(shí)候根據(jù)項(xiàng)目需要，使用可橫向滑動的GridView。僅以該文記錄一下，畢竟沒什么技術(shù)含量。

1.主界面布局代碼：activity_main.xml。設(shè)置android:numColumns=”auto_fit”是因?yàn)榭梢圆欢?xiàng)的添加子項(xiàng)。

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:layout_width="fill_parent"
 android:layout_height="fill_parent"
 android:orientation="vertical">

 <HorizontalScrollView
  android:layout_width="fill_parent"
  android:layout_height="wrap_content">

  <LinearLayout
   android:layout_width="wrap_content"
   android:layout_height="fill_parent">

   <view.gridviewdemo.AblGridView
    android:id="@+id/id_gridview_home"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:gravity="center"
    android:numColumns="auto_fit"
    android:scrollbars="none"
    android:stretchMode="spacingWidthUniform"/>
  </LinearLayout>
 </HorizontalScrollView>

</LinearLayout>

2.主界面GridView列表子項(xiàng)布局文件：home_gridview_item.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:layout_gravity="center"
 android:layout_margin="0dp"
 android:background="#ffffff"
 android:orientation="vertical">

 <ImageView
  android:id="@+id/id_iv_item"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:layout_gravity="center_horizontal"
  android:layout_marginTop="10dp"
  android:gravity="center" />

 <TextView
  android:id="@+id/id_tv_item"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:layout_gravity="center_horizontal"
  android:layout_marginTop="5dp"
  android:gravity="center"
  android:paddingBottom="10dp"
  android:text="標(biāo)題文字"
  android:textSize="12sp" />
</LinearLayout>

3.java實(shí)現(xiàn)代碼：MainActivity.java

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.DisplayMetrics;
import android.widget.GridView;
import android.widget.LinearLayout;

public class MainActivity extends AppCompatActivity {
 AblGridView id_gridview_home;
 private int[] imgs = {R.mipmap.index1_nav_xc, R.mipmap.index1_nav_xc,
   R.mipmap.index1_nav_xc, R.mipmap.index1_nav_xc, R.mipmap.index1_nav_xc};
 private String[] titles = new String[]{"子項(xiàng)1", "子項(xiàng)2","子項(xiàng)3","子項(xiàng)4", "子項(xiàng)5"};
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
  id_gridview_home= (AblGridView) findViewById(R.id.id_gridview_home);
  setGridView();
 }

 /**設(shè)置GirdView參數(shù)，綁定數(shù)據(jù)*/
 private void setGridView() {
  int size = imgs.length;
  int length = 100;
  DisplayMetrics dm = new DisplayMetrics();
  getWindowManager().getDefaultDisplay().getMetrics(dm);
  float density = dm.density;
  int gridviewWidth = (int) (size * (length + 4) * density);
  int itemWidth = (int) (length * density);
  LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
    gridviewWidth, LinearLayout.LayoutParams.FILL_PARENT);
  id_gridview_home.setLayoutParams(params); // 設(shè)置GirdView布局參數(shù),橫向布局的關(guān)鍵
  id_gridview_home.setColumnWidth(itemWidth); // 設(shè)置列表項(xiàng)寬
  id_gridview_home.setHorizontalSpacing(5); // 設(shè)置列表項(xiàng)水平間距
  id_gridview_home.setStretchMode(GridView.NO_STRETCH);
  id_gridview_home.setNumColumns(size); // 設(shè)置列數(shù)量=列表集合數(shù)
  AblGridViewBaseAdapter adapter = new AblGridViewBaseAdapter(this,imgs,titles);
  id_gridview_home.setAdapter(adapter);
 }
}

4.自定義控件：AblGridView

import android.content.Context;
import android.util.AttributeSet;
import android.widget.GridView;

/**
 * 繼承GridView控件，為了更友好的顯示
 * 解決在scrollview中只顯示第一行數(shù)據(jù)的問題
 */
public class AblGridView extends GridView {
 public AblGridView(Context context, AttributeSet attrs) {
  super(context, attrs);
 }

 public AblGridView(Context context) {
  super(context);
 }

 public AblGridView(Context context, AttributeSet attrs, int defStyle) {
  super(context, attrs, defStyle);
 }

 @Override
 public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
  int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2,
    MeasureSpec.AT_MOST);
  super.onMeasure(widthMeasureSpec, expandSpec);
 }

}

5.重寫適配器：AblGridViewBaseAdapter

import android.content.Context;
import android.util.SparseArray;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

/**
 * 重寫適配器
 */
public class AblGridViewBaseAdapter extends BaseAdapter {

 private Context mContext;
 private String[] Title;//顯示標(biāo)題數(shù)組
 private int[] Imgs;//顯示圖標(biāo)數(shù)組

 public AblGridViewBaseAdapter(Context mContext,int[] imgs ,String[] titles) {
  super();
  this.mContext = mContext;
  Title = titles;
  Imgs = imgs;
 }

 @Override
 public int getCount() {
  return Title.length;
 }

 @Override
 public Object getItem(int position) {
  return position;
 }

 @Override
 public long getItemId(int position) {
  return position;
 }

 @Override
 public View getView(int position, View convertView, ViewGroup parent) {
  convertView = loadHomeHyOrYs(position, convertView, parent);
  return convertView;
 }

 /**
  * 加載會員或醫(yī)生的功能列表
  */
 public View loadHomeHyOrYs(int position, View convertView, ViewGroup parent) {
  if (convertView == null) {
   convertView = LayoutInflater.from(mContext).inflate(
     R.layout.home_gridview_item, parent, false);
  }
  TextView tv = get(convertView, R.id.id_tv_item);
  ImageView iv = get(convertView, R.id.id_iv_item);
  iv.setBackgroundResource(Imgs[position]);
  tv.setText(Title[position]);
  return convertView;
 }

 public <T extends View> T get(View view, int id) {
  SparseArray<View> viewHolder = (SparseArray<View>) view.getTag();
  if (viewHolder == null) {
   viewHolder = new SparseArray<View>();
   view.setTag(viewHolder);
  }
  View childView = viewHolder.get(id);
  if (childView == null) {
   childView = view.findViewById(id);
   viewHolder.put(id, childView);
  }
  return (T) childView;
 }

}

以上就是本文的全部內(nèi)容，希望對大家的學(xué)習(xí)有所幫助，也希望大家多多支持腳本之家。

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